Secondary Active Transport in the Nephron. The Kidney and Nephron. Inflammatory Response. Review of B cells, CD4+ T cells and CD8+ T cells. Cytotoxic T Cells. Helper T Cells. Professional Antigen Presenting Cells (APC) and MHC II complexes. B Lymphocytes (B cells) Types of immune responses: Innate and Adaptive. Humoral vs. Cell-Mediated. Role of Phagocytes in Innate or Nonspecific Immunity. Anatomy of a muscle cell. Role of the Sarcoplasmic Reticulum in Muscle Cells. Tropomyosin and troponin and their role in regulating muscle contraction. Myosin and Actin.